Stuck in traffic? Plug in the USB-compatible Mpow and charge up to three devices—two tablets and one smartphone—simultaneously by the time you reach your destination. This car charger packs in 6.6 amps of power and X-Smart technology that identifies your device to provide the fastest possible charge. The Mpow will even automatically stop charging if there’s a danger of overcharging, overheating, or overcurrent, protecting your gadgets.